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Hello, I am new to model railroading, my father and uncles were all really big in this years ago, but that presents a problem now, as all of their expertise and answers are out of date. My current question: I have seen two engines running on the same line on many layouts...how is this done, is the engine coded to respond only to a certain controller, and if so, how reliable and durable is this arrangement? Also, dealing w/electricity...how do you put a loop at the end of a main-line to turn the train and then dump it back into the main-line via a switch (turn-out) and still have it running the same direction? Hasn't the power flow to the wheels switched when the engine switched directions? What keeps it from flying into reverse as soon as it crosses the gaps in the rails and joins the mainline, or does it and this is something you compensate for? Sorry for the general nature of the questions, but better to know the answers now, then waiting until they come up during the construction of the real layout. Thanks,
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